CMake/Modules/CMakeTestCUDACompiler.cmake
Robert Maynard 87df637078 CUDA: Do not treat CUDA toolkit include directories as implicit
CMake properly detects the toolkit directories as implicit system
includes, but CUDA compilers don't add explicit `-isystem` markups to
these directories when compiling CUDA code.  Due to this limitation,
allow users to explicitly specify these directories as SYSTEM dirs.

Fixes: #16464, #19864
2020-02-03 14:59:26 -05:00

104 lines
4.1 KiB
CMake

# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
if(CMAKE_CUDA_COMPILER_FORCED)
# The compiler configuration was forced by the user.
# Assume the user has configured all compiler information.
set(CMAKE_CUDA_COMPILER_WORKS TRUE)
return()
endif()
include(CMakeTestCompilerCommon)
# Remove any cached result from an older CMake version.
# We now store this in CMakeCUDACompiler.cmake.
unset(CMAKE_CUDA_COMPILER_WORKS CACHE)
# This file is used by EnableLanguage in cmGlobalGenerator to
# determine that the selected cuda compiler can actually compile
# and link the most basic of programs. If not, a fatal error
# is set and cmake stops processing commands and will not generate
# any makefiles or projects.
if(NOT CMAKE_CUDA_COMPILER_WORKS)
PrintTestCompilerStatus("CUDA")
file(WRITE ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/main.cu
"#ifndef __CUDACC__\n"
"# error \"The CMAKE_CUDA_COMPILER is set to an invalid CUDA compiler\"\n"
"#endif\n"
"int main(){return 0;}\n")
try_compile(CMAKE_CUDA_COMPILER_WORKS ${CMAKE_BINARY_DIR}
${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/main.cu
OUTPUT_VARIABLE __CMAKE_CUDA_COMPILER_OUTPUT)
# Move result from cache to normal variable.
set(CMAKE_CUDA_COMPILER_WORKS ${CMAKE_CUDA_COMPILER_WORKS})
unset(CMAKE_CUDA_COMPILER_WORKS CACHE)
set(CUDA_TEST_WAS_RUN 1)
endif()
if(NOT CMAKE_CUDA_COMPILER_WORKS)
PrintTestCompilerResult(CHECK_FAIL "broken")
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
"Determining if the CUDA compiler works failed with "
"the following output:\n${__CMAKE_CUDA_COMPILER_OUTPUT}\n\n")
string(REPLACE "\n" "\n " _output "${__CMAKE_CUDA_COMPILER_OUTPUT}")
message(FATAL_ERROR "The CUDA compiler\n \"${CMAKE_CUDA_COMPILER}\"\n"
"is not able to compile a simple test program.\nIt fails "
"with the following output:\n ${_output}\n\n"
"CMake will not be able to correctly generate this project.")
else()
if(CUDA_TEST_WAS_RUN)
PrintTestCompilerResult(CHECK_PASS "works")
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
"Determining if the CUDA compiler works passed with "
"the following output:\n${__CMAKE_CUDA_COMPILER_OUTPUT}\n\n")
endif()
# Try to identify the ABI and configure it into CMakeCUDACompiler.cmake
include(${CMAKE_ROOT}/Modules/CMakeDetermineCompilerABI.cmake)
CMAKE_DETERMINE_COMPILER_ABI(CUDA ${CMAKE_ROOT}/Modules/CMakeCUDACompilerABI.cu)
# Try to identify the compiler features
include(${CMAKE_ROOT}/Modules/CMakeDetermineCompileFeatures.cmake)
CMAKE_DETERMINE_COMPILE_FEATURES(CUDA)
if("x${CMAKE_CUDA_SIMULATE_ID}" STREQUAL "xMSVC")
set(CMAKE_CUDA_IMPLICIT_LINK_LIBRARIES "${CMAKE_CUDA_HOST_IMPLICIT_LINK_LIBRARIES}")
set(CMAKE_CUDA_IMPLICIT_LINK_DIRECTORIES "${CMAKE_CUDA_HOST_IMPLICIT_LINK_DIRECTORIES}")
endif()
# Remove the following libraries from CMAKE_CUDA_HOST_IMPLICIT_LINK_LIBRARIES and
# CMAKE_CUDA_IMPLICIT_LINK_LIBRARIES
#
# - cudart
# - cudart_static
# - cudadevrt
#
# These are controlled by CMAKE_CUDA_RUNTIME_LIBRARY
list(REMOVE_ITEM CMAKE_CUDA_IMPLICIT_LINK_LIBRARIES cudart cudart_static cudadevrt)
list(REMOVE_ITEM CMAKE_CUDA_HOST_IMPLICIT_LINK_LIBRARIES cudart cudart_static cudadevrt)
# Remove the CUDA Toolkit include directories from the set of
# implicit system include directories.
# This resolves the issue that NVCC doesn't specify these
# includes as SYSTEM includes when compiling device code, and sometimes
# they contain headers that generate warnings, so let users mark them
# as SYSTEM explicitly
if(CMAKE_CUDA_TOOLKIT_INCLUDE_DIRECTORIES)
list(REMOVE_ITEM CMAKE_CUDA_IMPLICIT_INCLUDE_DIRECTORIES
${CMAKE_CUDA_TOOLKIT_INCLUDE_DIRECTORIES}
)
endif()
# Re-configure to save learned information.
configure_file(
${CMAKE_ROOT}/Modules/CMakeCUDACompiler.cmake.in
${CMAKE_PLATFORM_INFO_DIR}/CMakeCUDACompiler.cmake
@ONLY
)
include(${CMAKE_PLATFORM_INFO_DIR}/CMakeCUDACompiler.cmake)
endif()
unset(__CMAKE_CUDA_COMPILER_OUTPUT)